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公开(公告)号：US11121661B2
公开(公告)日：2021-09-14
申请号：US16702929
申请日：2019-12-04
发明人： Marco Janko , Emmanuel Marchais , Carl Ståhl
IPC分类号： H02P25/034 , G08B6/00
摘要： A method for minimizing settling of a moving mass of an electromagnetic load may include determining a polarity and a magnitude of a velocity of the moving mass based on real time measurements of one or more parameters associated with the electromagnetic load and based on the polarity and the magnitude of the velocity, generating a braking signal to be applied to the moving mass that opposes the polarity of the velocity.
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公开(公告)号：US20240238842A1
公开(公告)日：2024-07-18
申请号：US18098396
申请日：2023-01-18
发明人： Marco Janko , Jorge Reynaga , Chin Yong , Eric Lindemann , Emmanuel Marchais , Hamid Sepehr , Vadim Konradi , Michael Kurek , Filippo Rossi , Anil Lal , Aleksey Khenkin
CPC分类号： B06B1/0276 , H04R29/00 , B06B2201/40
摘要： A method includes applying a high frequency signal to an electromechanical actuator and measuring a first response of the electromechanical actuator to the high frequency signal, estimating electrical parameters of the electromechanical actuator based on the first response, applying a low frequency broadband signal to the electromechanical actuator and measuring a second response of the electromechanical actuator to the low frequency broadband signal, and estimating mechanical parameters of the electromechanical actuator based on the second response and the estimated electrical parameters.
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公开(公告)号：US11641546B2
公开(公告)日：2023-05-02
申请号：US16715261
申请日：2019-12-16
发明人： Kok Chin Chang , Marco Janko , Kyle Wilkinson
摘要： A method for minimizing post-playback oscillation during playback of a haptic playback waveform to a haptic transducer may include determining whether a frequency response of the haptic playback waveform has a notch with a notch frequency at approximately a resonant frequency of the haptic transducer and, responsive to the notch frequency differing from the resonant frequency, modifying the haptic playback waveform for playback to the haptic transducer by shifting the notch frequency to approximately the resonant frequency.
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公开(公告)号：US11662821B2
公开(公告)日：2023-05-30
申请号：US16850904
申请日：2020-04-16
发明人： Aleksey Khenkin , Jun Yan , Marco Janko , Michael McKnight
IPC分类号： G06F3/01 , G01R33/028 , H02N11/00 , H02N2/14 , H02N1/00 , H01L41/04 , H01L41/09 , H01L41/083
CPC分类号： G06F3/016 , G01R33/028 , H02N1/006 , H02N2/14 , H02N2/142 , H02N11/00 , H01L41/042 , H01L41/083 , H01L41/09
摘要： A method may include measuring an electrical parameter of an electromagnetic load having a moving mass during the absence of a driving signal actively driving the electromagnetic load, measuring a mechanical parameter of mechanical motion of a host device comprising the electromagnetic load, correlating a relationship between the mechanical parameter and the electrical parameter, and calibrating the electromagnetic load across a plurality of mechanical motion conditions based on the relationship.
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公开(公告)号：US11139767B2
公开(公告)日：2021-10-05
申请号：US16207340
申请日：2018-12-03
发明人： Marco Janko , Harsha Rao , Carl Ståhl , Rong Hu
IPC分类号： B66C1/10 , H02P25/034 , H02P21/00 , H02P21/13 , H02P21/22 , H03H17/02 , G08B6/00 , H02P21/18 , G06F3/01 , B06B1/02
摘要： According to embodiments described herein, there are provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.
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